In a computer controlled impedance setup, the current sensitivity of the Solartron SI-1260 Impedance/Gain Phase Analyzer is improved by six orders of magnitude by the Keithley 428 Current Amplifier. Impedances up to the order of 1013 R can be measured at low frequencies with the ac signal of 30mV rm
MEASUREMENTS OF ISOTHERMAL COMPLEX MODULI OF VISCOELASTIC MATERIALS OVER A LARGE RANGE OF FREQUENCIES
β Scribed by M. Soula; T. Vinh; Y. Chevalier; T. Beda; C. Esteoule
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 284 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0022-460X
No coin nor oath required. For personal study only.
β¦ Synopsis
A method of determination of the Young's and shear complex moduli of viscoelastic materials using a transmissibility function is presented. The experimental set-up shows that it is possible to evaluate both moduli on the same samples. We will show that, with appropriate inverse methods, isothermal complex moduli are obtained over a large range of frequencies.
π SIMILAR VOLUMES
## Abstract For in situ measurement of the complex permittivity of planar materials, a freeβspace system based on reflection or transmission ellipsometry has been developed and extended to microwave frequencies. Different angles of incidence were studied in the range [35β50Β°]. Original numerical me